---
title: Type
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/compressed_matte_atom/type
---

# Type

A 32-bit integer that identifies the atom type.

## Overview

Overview This field must be set to 'kmat'.

## See Also

### Data fields

- [Size](quicktime-file-format/compressed_matte_atom/size.md)
- [Version](quicktime-file-format/compressed_matte_atom/version.md)
- [Flags](quicktime-file-format/compressed_matte_atom/flags.md)
- [Matte image description structure](quicktime-file-format/compressed_matte_atom/matte_image_description_structure.md)
- [Matte data](quicktime-file-format/compressed_matte_atom/matte_data.md)